Oracle Solution for Error ora-16195

Solution for Oracle Error ORA-16195

ORA-16195: DG_CONFIG requires DB_UNIQUE_NAME be explicitly defined

What triggered the Error:

The DG_CONFIG attribute of the LOG_ARCHIVE_CONFIG parameter can only be used if the DB_UNIQUE_NAME parameter has been explicitly defined.

What should we do to fix it:

Explicitly define a valid DB_UNIQUE_NAME.